Yes, both Invoca and calltrak offer a Free Trial.
Invoca is designed for Large Enterprises and Medium Business.
calltrak is designed for Medium Business and Small Business.
The starting price of calltrak begins at $29.95/Month, while pricing details for Invoca are unavailable.
Some top alternatives to Invoca includes Uniphore, CallTrackingMetrics, CallRail, ResponseTap, Retreaver, Calltracks, calltrak, TeleCapture, Call Tracker and FreeCallTracking.AI.
Some top alternatives to calltrak includes ResponseTap, AvidTrak, Calltracks, CallView 360, TeleCapture, Call Tracking Pro, Call Tracker, Caller Insight, CallTracking and FreeCallTracking.AI.